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This UNAVCO activity teaches the architecture of GPS with physical models (satellites to stations on the ground). Students interpret data for the positions of two Icelandic stations through time (time series plots) and represent the time series data as velocity vectors. They apply their skills to discover that the Mid-Atlantic Ridge, a divergent plate boundary, is rifting Iceland. They apply their knowledge to the motion of cars. Finally, they explore GPS vectors in the context of global plate tectonics.
